Python API incorrectly passes `JVM_ARGS` as single argument

In the same vein as https://issues.apache.org/jira/browse/FLINK-31915, `JVM_ARGS` need to be passed as an array. For example, the current behavior of export `JVM_ARGS='-XX:CompressedClassSpaceSize=100M -XX:MaxMetaspaceSize=200M'` is:

>               raise RuntimeError(
                    "Java gateway process exited before sending its port number.\nStderr:\n"
                    + stderr_info
                )
E               RuntimeError: Java gateway process exited before sending its port number.
E               Stderr:
E               Improperly specified VM option 'CompressedClassSpaceSize=100M -XX:MaxMetaspaceSize=200M'
E               Error: Could not create the Java Virtual Machine.
E               Error: A fatal exception has occurred. Program will exit.